Which are the common functions of the nervous and endocrine systems?

Given below is an incomplete table about certain hormones, their source glands, and one major effect on the human body.
Identify the correct option for the three blanks $A$, $B$, and $C$.

Gland	Secretion	Effect on Body
$A$	Oestrogen	Maintenance of secondary sexual characters
Alpha cells of islets of Langerhans	$B$	Raises blood sugar level
Anterior pituitary	$C$	Over secretion leads to gigantism

Match the name of the hormone in Column-$I$ with its source of secretion in Column-$II$ and its function in Column-$III$.

Column-$I$	Column-$II$ $\&$ Column-$III$
$(a)$ Prolactin	$(m)$ Pituitary gland,$(q)$ Development of lactiferous tubules
$(b)$ Estrogens	$(l)$ Graafian follicle,$(r)$ Secondary sexual characters in females
$(c)$ GnRH	$(n)$ Hypothalamus,$(s)$ Stimulates release of $FSH$
$(d)$ Androgen	$(o)$ Interstitial cells,$(p)$ Secondary sexual characters of males

Give scientific reasons:
$(1)$ Hormones are regulatory chemicals.
$(2)$ Less secretion of thyroxine results in stunted growth of a person.
$(3)$ Deficiency of insulin results in diabetes mellitus.
$(4)$ Pancreas is an exocrine and endocrine gland.

Match the following columns and select the correct option.

Column-$I$	Column-$II$
$(a)$ Pituitary gland	$(i)$ Grave's disease
$(b)$ Thyroid gland	$(ii)$ Diabetes mellitus
$(c)$ Adrenal gland	$(iii)$ Diabetes insipidus
$(d)$ Pancreas	$(iv)$ Addison's disease

Insulin differs from growth hormone in the context of: